钢倒撑替换技术在滨海相软土深基坑中的应用  

Application of Steel Backing Replacement Technology in Deep Foundation Pit Excavation of Coastal Soft Soil

作　　者：王为鑫 Wang Weixin(China RAILWAY 14TH BUREAU Group Co.,Ltd.,Jinan,China)

机构地区：[1]中铁十四局集团有限公司,山东济南

出　　处：《科学技术创新》2025年第8期118-121,共4页Scientific and Technological Innovation

摘　　要：深基坑结构施工中常采用设置钢倒撑进行拆除临时横撑的方法,该方法具有成本高、工期长等缺点;为解决这一问题,依托津沽海河隧道盾构始发段明挖深基坑工程,提出了满堂支架支撑体系替换钢倒撑的方案。数值计算和现场监测表明,支撑体系受力和基坑变形满足安全要求,该方案不但可确保基坑施工过程中结构安全,而且降低了工程造价,加快了施工进度。文中提出了满堂支撑替换方案可对同类滨海相软土深基坑工程施工有一定的参考价值。In the construction of deep foundation pit,the method of using steel inverted braces to remove temporary transverse braces is often adopted.But it has the disadvantages of high cost and long construction period.To solve this problem,based on the deep foundation pit project of the shield starting section of the Jingu Haihe Tunnel,a full framing system is proposed to replace the steel inverted brace.Numerical calculations and on-site monitoring indicate that the support system's stress and foundation pit deformation meet the safety requirements.This scheme not only ensures the structural safety during the foundation pit construction process,but also reduces the project cost and accelerates the construction progress.The scheme proposed by the article has certain reference value for the construction of similar coastal soft soil deep foundation pit projects.

关 键 词：滨海相软土 深基坑 钢倒撑 满堂支架 现场监测 

分 类 号：U455.8[建筑科学—桥梁与隧道工程]